M62334P/FP
MITSUBISHI <STD. LINEAR ICs>
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
M62339P/FP
980714 rev.E ( / 6 )
MITSUBISHI ELECTRIC
PIN CONFIGURATION(TOP VIEW)
Outline 8P4 (P)
8P2S-A (FP)
DESCRIPTION
The M62334/M62339 is an integrated circui
t
semiconductor of CMOS structure with 4 channels of built
in D-A converters with output buffer operational amplifiers.
The input is 2-wires serial method is used for the transfer
format of digital data to allow connection with a
microcomputer with minimum wiring.
The output buffer operational amplifier employs AB class
output circuit with sync and source drive capacity of 1.0mA
or more,and it operates in the whole voltage range from
Vcc to ground.
The M62333 and the M62338 differ only in their slave
address.
APPLICATION
Conversion from digital data to analog control data fo
r
home-use and industrial equipment.
Signal gain control or automatic adjustment o f DISPLAY-
MONITOR or CTV.
FEATURES
• Digital data transfer format
I2C BUS serial data method
• Output buffer operational amplifier
it operates in the whole voltage range from Vcc to
ground.
• High output current drive capacity
±1.0mA over
BLOCK DIAGRAM
87 6 5
CHANNEL
DE
CO
DER
POWER ON
RE
S
ET
8
Vcc SCL SDA GND
8bit Latch
8bit upper
segment R-2R
1
Ao1
8bit Latch
8bit upper
seg
m
e
nt R-2R
2
Ao2
8bit Latch
8bit upper
segment R-2R
3
Ao3
I2C BUS TRANSCEIVER
8bit Latch
8bit upper
segment R-2R
4
Ao4
1
2
3
4
8
7
6
5
M62334
M62339
Vcc
SCL
SDA
GND
Ao
2
Ao1
Ao
3
Ao
4
1
M62334P/F
P
MITSUBISHI <STD. LINEAR ICs>
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
M62339P/F
P
980714 rev.E ( / 6 )
MITSUBISHI ELECTRIC
EXPLANATION OF TERMINALS
ABSOLUTE MAXIMUM RATING
Symbol
Vcc
Vin
Vo
Pd
Topr
Tstg
Supply
Input voltage
Output voltage
Power dissipation
Operating temperature
Storage temperature
Parameter
Conditions
–0.3 to 7.0
–0.3 to Vcc+0.3
–20 to 85
–55 to 125
Unit
V
V
V
mW
Ratings
°C
417 (DIP) / 272 (FP)
–0.3 to Vcc+0.3
°C
ELECTRICAL CHARACTERISTICS (Vcc=+5V±10%,GND=0V,Ta=–20 to 85°C unless otherwise noted)
VAO Buffer amplifier output
voltage range IAO=±100µA 0.1 V
0.2 V
IAO Buffer amplifier output
drive range Upper side saturation voltage=0.3V
Lower side saturation voltage=0.2V –1.0 1.0 mA
SDL
SL
SZERO
SFULL
Co
Ro
Differential nonlinearity
Nonlinearity
Zero code error
Full scale error
Output capacitative load
Buffer amplifier
output inpedance
VCC=5.12V(20mV/LSB)
without load (IAO=0)
–1.0 1.0
–1.5 1.5
–2.0 2.0
–2.0 2.0
0.1
5.0
LSB
LSB
LSB
LSB
µF
Ω
IAO=±500µA VCC-0.1
VCC-0.2
Input leak current
Input low voltage
Input high voltage
VIN=0 to Vcc
0.8VCC
–10 10
0.2VCC V
V
IILK
VIL
VIH
Icc Supply current
Symbol
Suplly voltage
Parameter Test conditions Ratings
MIN TYP MAX Unit
V
Vcc 2.7 5.0 5.5
µA
mA
CLK=500kHz Operation, IAO=0µA
Data : 6Ah (at maximum current )
SDA=SCL=GND,IAO=0µA
mA
Pin No. Symbol Function
8
6
7
5
1
2
3
SDA
SCL
Ao1
Vcc
GND
Serial data input terminal
Serial clock input terminal
Ao2
Ao3
8-bit resolution D-A converter output terminal
Power supply terminal
GND terminal
4
Ao4
0 1.4 3.0
0 0.9 2.0
0
VCC
2
M62334P/FP
MITSUBISHI <STD. LINEAR ICs>
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
M62339P/FP
980714 rev.E ( / 6 )
MITSUBISHI ELECTRIC
I2C BUS LINE CHARACTERISTICS
• Note that a transmitter must internally provide at least a hold time to bridge the undefined region
(max.300 ns) of the falling edge of SCL.
TIMING CHART
SCL clock frequency
fSCL 0 100 KHz
Time the bus must be free before a new transmission can start
tBUF 4.7 - µs
tSU:DAT Set-up time DATA 250 - ns
tRRise time of both SDA and SCL lines - 1000 ns
tFFall time of both SDA and SCL lines - 300 ns
tHD:STA Hold time START Condition. After this period,the first clock pulse is generated. 4.0 - µ s
tLOW LOW period of the clock 4.7 - µ s
tHIGH HIGh period of the clock 4.0 - µ s
tSU:STA Set-up time for START condition (Only relevant for a repeated START
condition) 4.7 - µ s
tHD:DAT Hold time DATA 0 - µ s
tSU:STO Set-up time for STOP condition 4.0 - µ s
ParameterSymbol Min. Max. units
START
tR, tF
tBUF
tLOW tHIGH
tHD:DATtSU:DAT
SDA
SCL
VIH
VIL
VIH
VIL
tHD:STA tSU:STA
START START STOP
tSU:STO
3
M62334P/FP
MITSUBISHI <STD. LINEAR ICs>
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
M62339P/FP
980714 rev.E ( / 6 )
MITSUBISHI ELECTRIC
STA SLAVE ADDRESS W A SUB ADDRESS A DAC DATA A STP
I2C BUS FORMAT
First
1001100
Last First
1001111
Last
M62334 M62339
• DAC DATA
D2 D1 D0D3D4D5D6D7
First
MSB Last
LSB
CHANNEL SELECT DATA
S0
0
1
ch1 selection
ch2 selection
Channel selection
STA: start condition
W: write(SDA=Low) A: affirmation bit
STP: stop condition
• SLAVE ADDRESS
• SUB ADDRESSS
CHANNEL
SELECT DATA
Last
First
XXX S0XXX
D7 D6 D5 D4 D3 D2 D1 D0 DAC output
00000000
00000001
00000010
00000011
11111110
11111111
::::::::
Vcc/256 x 1
:
MSB LSB
First Last
Vcc/256 x 255
Vcc/256 x 2
Vcc/256 x 3
Vcc/256 x 4
Vcc
S1 S1
0
001 11 ch3 selection
ch4 selection
4
Don't care
M62334P/FP
MITSUBISHI <STD. LINEAR ICs>
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
M62339P/FP
980714 rev.E ( / 6 )
MITSUBISHI ELECTRIC
TIMING CHART (MODEL)
With SCL at HIGH,SDA line goes from HIGH to LOW•Start condition
With SCL at HIGH,SDA line goes from LOW to HIGH •Stop condition
(Under normal circumstances,SDA is changed when SCL is LOW)
•Acknowledge bit The receiving IC has to pull down SDA line whenever receive slave data.
(The transmitting IC releases the SDA line just then transmit 8bit data.)
Digital Data Formats
SUB ADDRESS n A DAC DATA n A STPSUB ADDRESS 2 A DAC DATA 2 A
STA SLAVE ADDRESS W A SUB ADDRESS 1 A DAC DATA 1 A
SDA
SCL
D/A
output
12 A
34567W
•start condition to slave address bite
start condition
SDA
SCL
D/A
output
12 A
34 5678
•sub address bite
•DAC data bite to stop condition
stop condition
SDA
SCL
D/A
output
12 A345678
5
M62334P/FP
MITSUBISHI <STD. LINEAR ICs>
8-BIT 4CH I2C BUS D-A CONVERTER WITH BUFFER AMPLIFIER
S
M62339P/FP
980714 rev.E ( / 6 )
MITSUBISHI ELECTRIC
PRECAUTION FOR USE
Supply voltage terminal(Vcc) is also used for D-A converter upper reference
voltage setting. IF ripple or spike is input this terminal,accuracy of D-A conversion
is down. So,when use this device,please connect capacitor among Vcc to GND
for stable D-A conversion.
This IC's output amplifier has an advantage to capacitive load.So it's no problem
at device action when connect capacitor (0.1
µ
F MAX) among output to GND for
ever
y
noise eliminate.
APPLICATION EXAMPLE
• Purchase of MITSUBISHI ELECTRIC CORPORATION'S I2C components conveys a license under th
e
Philips I2C Patent Rights to use these components an I2C system,provided that the system comforms to I2
C
Standard Specification as defined by Philips.
Note regarding I2C BUS
• Mitsubishi Electric Corporation puts the maximum effort into making semiconductor products better and
more reliable, but there is always the possibility that trouble may occur with them. Trouble with
semiconductors may lead to personal injury,fire or property damage. Remember to give due consideration
to safety when making your circuit design, in order to prevent fires from spreading, redundancy, malfunction
or other mishap.
Keep safety first in your circuit designs!
6
Analog output
terminals
GND
M
CU
8
7
6
5
10µF 5V
SCL
SDA
VCC
1
2
3
4
Ao1
Ao2 5V
Ao3
Ao4